XT-1 vs K-3 weatherproofing

I know the K5 (and now the K3) is the gold standard for APS-C weatherproofed cameras. Does anyone have any experience with K3 vs XT1 weatherproofing? I own the XT1 but am reluctant to take it out in anything but a very light drizzle. I thought about getting an AW1 for shooting in the rain but the supplied kit lens doesn't have image stabilization and there are no long weatherproof lenses for it.